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Description
VectorThe story I'll tell here is about the evolution of the way we humans record and make sense of all the data that swirl around us Vector takes readers on an extraordinary 5000 year journey through the human imagination. The stars of this book, vectors and tensors, are unlikely celebrities. Yet mathematician and science writer Robyn Arianrhod shows how they enabled physicists and mathematicians to think in a brand new way. They inspired James Clerk
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.4 ★★★★★
Based on 308 reviews
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Product Reviews
★★★★★ 3
Okay
I like that it fits my umbrella well, hinges open for easy application and removal, and that it has enough light for us to see our food at night.
I do not like that half of the outer lights do not work part of the time until I take out the batteries and swap them around.
Fine enough for the price, not worth the hassle of returning.
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Reviewed in the United States on May 10, 2025
★★★★★ 5
Perfect!
Lightweight and easy to use! Love the three light settings.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Easy to use.
Works well. Light is bright. Our new patio umbrella does not have e a center pole, so the lights get somewhat blocked. But still pretty useful.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
My favorite pimple patches
Style: Bundle, Size: 2 Piece Set
I've tried the competitor Mighty Patches and a couple other pimple patches. These are my favorite because they stay on the best and do the best job of healing/absorbing. The Microcrystal Spot Cover actually hurts a little when you put it on from the little spikes... but I love that because I feel like it's actually doing something! I wish they were a little more affordable.
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Reviewed in the United States on November 19, 2025
★★★★★ 5
Expensive but effective
Style: Bundle, Size: 2 Piece Set
This isn’t a miracle cure for acne, but it has proven beneficial for reducing redness and shortening healing time, in part because of how it works and also just as a barrier to prevent picking. Product does what the packaging says it will do. These dots are impressively thin. As the fluid is drawn into the patch, it creates a more pronounced white bump, but it is still thinner than typical extra thin hydrocolloid dressings.
If you’re planning to walk around and be seen while wearing acne patches, these are a great option, even if they are expensive. If you’re going to be primarily wearing patches while you sleep and are at a place in your life where you just don’t care how it looks as long as it works, shop around and cut a patch to size from a large (4”x4” or so) hydrocolloid dressing, and it will do the job just as well.
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Reviewed in the United States on February 11, 2020
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